Adjustable wheel-gage



(No Model.)

B. A. THIEM. ADJUSTABLE WHEEL GAGE.

P-atented July 14, 1896.

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7 UNITED STATES PATENT OFFICE.

EDWVARD A. THIEM, OF ST. PAUL, MINNESOTA.

ADJUSTABLE WI- IEEL-GAG E.

SPECIFICATION forming part of Letters Patent No. 563,944, dated July 14,1896.

Application filed October 2 8, 1895 To all whom it may concern.-

Be it known that I, EDWARD A. THIEM, a citizen of the United States,residing at St. Paul, in the county of Ramsey and State of Minnesota,have invented certain new and useful Improvements in \Vheel- Gages, ofwhich the following is a specification.

My invention relates to gages for bicycle and other wheels, by means ofwhich it can be readily ascertained whether or not the rim of the wheelis perfectly true; and it consists in the novel construction andcombination of parts hereinafterfullydescribed and claimed.

In the drawings, Figure l .is-a side elevation, Fig. 2 is a frontelevation, and Fig. 3 is a plan view, of the apparatus complete. Fig. 4is a side view of one of the adjusting screwrods detached. Fig. 5 is asectional detail illustrating the manner of mounting the adj ustingscrew-rod.

This apparatus may be employed to adjust different forms of wheels, butis more par ticularly applicable to bicycle-wheels, and for the purposeof illustration I have shown it in the drawings so employed.

A represents the base, to which a standard A is secured and extendingupward and backward at an angle, and having two levers B B pivoted at aa at their upper ends, as shown. In the upper ends of the levers B B V-shaped cavities 0r recesses b are formed to form rests to support theends of the axle D of the wheel D as shown, the V shape of the recessesinsuring the reception of any sized axle. Upon the lower ends of thelevers B B are swiveled two nuts d (F, through which a screw-rod E istapped, the thread passing through, the nut d being reversed from thatpassing through the nut (Z so that as the screw-rod is turned by itshand-wheel E the lower ends of the levers B B will be moved toward oraway from each other to increase or decrease the distance apart of theupper ends having the axle-rests, so that the lovers may readily beadjusted to the length of the axle. At the center the screw-rod E willbe formed with a channel (1 adapted to fit loosely into a slot in abracket a, the latter attached to the base of the standard A to hold thescrew-rod from end movement, but

leaving it free to be turned, or to move up Serial No. 567,119. (Nomodel.)

and down to the slight extent required by the movement of the levers B BF is a standard pivoted in lugs F on the base A, and having two arms FF, pivoted at e e to its top, the outer ends of the arms having notchesg g adapted to fit against the rim of the wheel D Upon the other ends ofthe arms F F are swiveled nuts h 71 through which a screw-rod F istapped by right and left hand threads, similar to the screw-rod E, sothat by turning the handwheel F the notches g 9 may be adjusted to fitany width of tire.

G is a right and left hand screw-rod tapped by its upper end into a nutG swiveled into the standard F, and the lower end tapped into a similarnut G pivotally connected to the base A, the turning of the screw-rod byits hand-wheel Gr causing the bracket F to be moved upward or downwardto adjust the notches g g nearer to or farther away from the rim of thewheel, to adapt the apparatus to different-sized wheels.

By this simple apparatus a wheel may be set by its axle upon the leversB B and the latter adjusted to support the wheel centrally, and then thearms F F adjusted until the notches g g rest against the corners of therim. Then by revolving the wheel upon the rests b b the position of therim at different points will denote its rotundity.

If the rim runs truly between the ends of the arms F313 at all parts ofits periphery, the operator knows it is perfectly true, but if not, thenthe points requiring adjustment will be readily and quickly noted.

The adjustments can be made with great certainty and nicety, and at thesame time very quickly and with no chance for error.

Having thus described my invention, what I claim as new is-- 1. In awheel-gage, the combination with the base and the standard, of thelevers pivoted to said standard intermediate their ends, 5 and theirupper ends formed with V-shaped notches, and means, substantially asdescribed, connected with the lower ends thereof for contracting andexpanding the same.

2. The combination with the base, the

standard at one end thereof, and the levers pivoted to said standardintermediate the ends and having V shaped notches in their upper ends,of the right and left hand screwrod passing through correspondingrecesses in the lower ends of said levers, substantially as described.

3. In a wheel-gage, the combination with the base, the standard at oneendthereof, the levers pivoted thereto intermediate their ends, andhaving V-shaped notches in their upper ends, and the right'and-leftscrew-rod passing through corresponding apertures in the lower ends ofsaid levers, of the bracket secured to said base, the levers pivoted tosaid bracket and having notches in one end adapted to engage with therim of a wheel, means for simultaneously contracting or expanding saidlevers and means for moving said bracket to and from the rim of a wheel,substantially as described.

4. In a wheel-gage, the combination with the base, the standard, thelevers pivoted to said standard intermediate their ends and havingnotches in their upper ends and the right-and-left screw-rod passingthrough corresponding apertures in the lower ends of said levers forsimultaneously contracting or expanding the same, of the bracket pivotedto said base, the levers pivoted to the upper end thereof having notchesadapted to engage with the rim of a wheel, the right-and-left screw-rodpassing through corresponding apertures in the lower ends of said lever,the nuts pivotally connected, respectively, with said base and bracketand the right-and-left screw-rod connected with said nuts, substantiallyas described.

5. In a wheel-adjusting apparatus, a wheel supported from a standard andbase, two levers having notches fitting the corners and face of the rimof the wheel, and pivoted upon a standard or bracket, said bracket beingmovably mounted upon said base, a nut swiveled to said bracket, a nutswiveled to said base, and a screw-rod having right and left handthreads and fitting by its ends into said nuts, whereby said bracket maybe adjusted, substantially as and for the purpose set forth.

In testimony whereof I have hereunto set my hand in the presence of twosubscribing witnesses.

EDYVARD A. THIEM.

Witnesses JEAN MODIARMID, H. S. WEBSTER.

